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Finding the Fourth Proportional to 115,989.60, 173,595.60 and 80,997.60

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Solution

The fourth proportional to 115,989.60, 173,595.60 and 80,997.60 is: 121,224.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,989.60 : 173,595.60 = 80,997.60 : x
  2. Step 2: Convert to fraction form
    115,989.60/173,595.60 = 80,997.60/x
  3. Step 3: Cross multiply
    115,989.60x = 173,595.60 × 80,997.60
  4. Step 4: Simplify right side
    115,989.60x = 14,060,826,970.56
  5. Step 5: Solve for x
    x = 14,060,826,970.56/115,989.60
  6. Step 6: Final answer
    x = 121,224.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.